S.A.D and dp/dr

Is there any links between the 2?....i felt really down in the winter, no emotions no energy etc...not feeling myself.....so i bought a SAD light, for me this worked,either that or it was placebo, but, DP is neva as bad for me in the summer or lighter months...

is there any sort of links between SAD and DP/DR...

(another question tho....some people find light makes there DP worse, so in essence a SAD light should make DP worse...)

anyone know anything of the 2

cheers